Answer:
3 blocks towards south
Explanation:
Displacement is the shortest distance between the final position and initial position.
Initially mackinzie moves 4 blocks west, then 2 blocks south, the 4 blocks east and then 1 block south. Net displacement in East-west direction = 4 - 4 = 0.
In North South direction, net displacement = 2+1 = 3 blocks towards south
